MDA-500
| Brand | Krell |
| Designer | Dan D'Agostino |
| Function | Amplifier, Power |
| Model ID | Mono-Differential Amplifier 500 |
| Form Factor | Standard Width |
| Signal Path | Analog Hardware |
| Weight | 144lbs |
| THD (1kHz/20kHz) | 0.2%/0.5% |
| Gain | 26dB |
| SNR | 106dB |
| Input Sensitivity | 3.2V |
| Input Impedance | 47kΩ |
| Output Impedance | 0.15Ω |
| Output Voltage (Peak to Peak) | 179V |
| Output Power (8/4/2/1Ω) | 500W/1000W/2000W/4000W |
| Channels | 1 Channel |
| Notes | The KSA-250 could optionally be sent in to Krell for conversion to the MDA-500. Options: Black faceplate |